
%mattypeshash = (
"a" => "Language material",
"b" => "Archival and Manuscripts Control",
"c" => "Printed music",
"d" => "Manuscript music",
"e" => "Cartographic material",
"f" => "Manuscript cartographic material",
"g" => "Projected medium",
"i" => "Nonmusical sound recording",
"j" => "Musical sound recording",
"k" => "Two-dimensional nonprojected graphic", 
"m" => "Computer files",
"o" => "Kits",
"p" => "Mixed material",
"r" => "Three-dimensional nonprojected graphic",
"s" => "Serial",
"t" => "Manuscript language material"
);

